Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['m', '6497', 'F', '1001', 'H', '5961', 'e']

13, 6497, 6, 1001, 8, 5961, 5